public class Main {
    public void sort(int[] a){
        int n = a.length;
        for(int i = 0; i < n-1; i++){
            for(int j = 0; j < n -1 ;j++){
                if (a[j] > a[j+1]){
                    int temp = a[j];
                    a[j] = a[j+1];
                    a[j+1] = temp;
                }
            }
        }
    }

    public static void main(String[] args) {
        int[] a = {6, 4, 3, 2, 7};
        Main m = new Main();
        m.sort(a);
        for(int num : a) {
            System.out.println(num + " ");
        }
    }
}

